source: trunk/third/gtkhtml3/src/htmlengine-edit-text.c @ 21460

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* This file is part of the GtkHTML library

   Copyright (C) 2000 Helix Code, Inc.
   
   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.
   
   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.
   
   You should have received a copy of the GNU Library General Public License
   along with this library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.
*/

#include <config.h>
#include <ctype.h>
#include <string.h>
#include "htmlcolorset.h"
#include "htmlcursor.h"
#include "htmlengine-edit-text.h"
#include "htmlengine-edit-movement.h"
#include "htmlengine-edit.h"
#include "htmlselection.h"
#include "htmltext.h"
#include "htmlengine.h"
#include "htmlimage.h"
#include "htmlsettings.h"
#include "htmlundo.h"

static gboolean
find_first (HTMLEngine *e)
{
        guchar c;

        c = html_cursor_get_current_char (e->cursor);
        while (c == 0 || ! g_unichar_isalnum (c) || c == ' ') {
                if (!html_cursor_forward (e->cursor, e))
                        return FALSE;
                c = html_cursor_get_current_char (e->cursor);
        }

        return TRUE;
}

static void
upper_lower (HTMLObject *obj, HTMLEngine *e, gpointer data)
{
        if (html_object_is_text (obj)) {
                gboolean up = GPOINTER_TO_INT (data);
                guchar *old_text;

                old_text = HTML_TEXT (obj)->text;
                HTML_TEXT (obj)->text = up ? g_utf8_strup (old_text, -1) : g_utf8_strdown (old_text, -1);
                g_free (old_text);
                HTML_TEXT (obj)->text_len = g_utf8_strlen (HTML_TEXT (obj)->text, -1);
                HTML_TEXT (obj)->text_bytes = strlen (HTML_TEXT (obj)->text);
        }
}

void
html_engine_capitalize_word (HTMLEngine *e)
{
        if (find_first (e)) {
                guchar c;

                html_undo_level_begin (e->undo, "Capitalize word", "Revert word capitalize");
                html_engine_set_mark (e);
                html_cursor_forward (e->cursor, e);
                html_engine_cut_and_paste (e, "up 1st", "revert up 1st",
                                           upper_lower, GINT_TO_POINTER (TRUE));
                html_engine_disable_selection (e);

                c = html_cursor_get_current_char (e->cursor);
                if (g_unichar_isalnum (c)) {
                        html_engine_set_mark (e);
                        html_engine_forward_word (e);
                        html_engine_cut_and_paste (e, "down rest", "revert down rest",
                                                   upper_lower, GINT_TO_POINTER (FALSE));
                        html_engine_disable_selection (e);
                }
                html_undo_level_end (e->undo);
        }
}

void
html_engine_upcase_downcase_word (HTMLEngine *e, gboolean up)
{
        if (find_first (e)) {
                html_engine_set_mark (e);
                html_engine_forward_word (e);
                html_engine_cut_and_paste (e,
                                           up ? "Upcase word" : "Downcase word",
                                           up ? "Revert word upcase" : "Revert word downcase",
                                           upper_lower, GINT_TO_POINTER (up));
                html_engine_disable_selection (e);
        }
}

static void
set_link (HTMLObject *obj, HTMLEngine *e, gpointer data)
{
        const char *complete_url = data;

        if (html_object_is_text (obj) || HTML_IS_IMAGE (obj)) {
                char *url = NULL;
                char *target = NULL;

                if (complete_url) {
                        url = g_strdup (complete_url);
                        target = strrchr (url, '#');
                        if (target) {
                                *target = 0;
                                target ++;
                        }
                }

                if (html_object_is_text (obj)) {
                        if (complete_url)
                                html_text_add_link (HTML_TEXT (obj), e, url, target, 0, HTML_TEXT (obj)->text_len);
                        else
                                html_text_remove_links (HTML_TEXT (obj));
                } else if (HTML_IS_IMAGE (obj)) {
                        if (complete_url)
                                html_object_set_link (obj,
                                                      url && *url
                                                      ? html_colorset_get_color (e->settings->color_set, HTMLLinkColor)
                                                      : html_colorset_get_color (e->settings->color_set, HTMLTextColor),
                                                      url, target);
                        else
                                html_object_remove_link (obj,
                                                         html_colorset_get_color (e->settings->color_set, HTMLTextColor));
                }

                g_free (url);
        }
}

void
html_engine_set_link (HTMLEngine *e, const char *complete_url)
{
        html_engine_cut_and_paste (e,
                                   complete_url ? "Set link" : "Remove link",
                                   complete_url ? "Remove link" : "Set link",
                                   set_link, (gpointer) complete_url);
}